Carbureter.



2 SHEETSSHIJBT l.

mus/(r0125 7 4 E i A, G BY V ATTORNEY S. H. PAGE & G.'J. BELDBN OARBURETER. APPLICATION TILED x4; 21,,1913,

igi

- win/mks.-

, S jg Eggs 4g g ar,

was strains PATENT orricn.

"SEEANLEY H. PAGE AND CHARLES J. BELDEN, OF SAN .FRANCISGO, CALIFORNIA, AS- ,ISIGNORS TO UNION GAS ENGINE COMPANY, OF SAN FRANCISCO, CALIFORNIA, A

. CQRI?.OB-A TION OF CALIFORNIA.

caanunnrnza.

Specification of Letters Patent.

Patented June 16, 1914.

To allwhom tt may concern Be it' lmovvn that ave, STANLEY Pact, and-( 13M8 1 BnLnnn, citizen-s of the United -States, residing in the city and county-cit San Francisco and State of Califonnia, have invented certain 1 new and usefiulilmprovements in Ca-rbureters, of which the following Yisa specification.

:The hereinafter "described invention relates particularlydoa llerm of carbureter in whiohthe gaseous mixture :of hydrocarbon vapors and air for internal combustion engines is :formed and by which the volume and quality of mixturesupplied are regulated in accordance with the vacuum formed in :the cylinder on the suction stroke of the pistonutherein.

illt is the object of this invention toenable a-satisiiactony-explosive mixture .to be produced under all varying engine load or speed conditions, and :general'ly'to improve the construction and operation of devices of the character referred to. p

More definitely and explicitly stated, the obj-ects'of our invention are as follows: to provide astructure having ,a mixing chamber and adapted to be attached to any engine cylinder preferably through the opening directly above the intake valve and communicating directly with the combustion chamber thereof, for supplying onithe formation of a vacuum in the cylindera gasified explosive fluid thereto; to provide a valve operated on the formation ofa vacuum in the cylinder to open the communication between the cylinder and the mixing chamber; to providea device having a plurality of positively operated valvecont-rolled air inlet openings, and to provide means for controlling the fluid supply and operated on the operation of said air inlet valves to properly proportion the volume of fluid admitted into the mixing chamber to the quantity of air admitted thereto.

With the above mentioned and other objects in view, the invention consists in the novel construction and combination of parts hereinafter described, illustrated in the accompanying drawings and pointed out in the claimshereto appended; it being understood that various changes in the form, proportion, size and minor details of construction, within the scope of the claims, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

To more fully comprehend the invention, reference should be had to the accompany lug-sheets o-f-drawings, wherein is disclosed one form oil? our invention, .and in which-s- Figure 1 is a vertical central sectional .view of an engine cylinder, disclosing our improved device mounted thereon i1nmed1atcl y labove the intake valve, and the mechanism for controlling the air valves.

Fig. 2 is .a vertical central sectional view oi" our improved gasifier, disclosing the hollow stem valve opening into the combustion chamber, the air inlet :port at the top of the casing, and the fluid feed controlling means. Fig. 3 is a top plan view of Fig. l, disclosing the controllingslide for the air inlet port at the top of the mixing chamber. Fig.4 is a view of the slide controlling the-air inlet port leading to the cylinder below the intake valve. Fig. 5 is a top :plan view of 2, taken on the line 55, disclosing the arrangement of the inter-i'or of the gasifier. Fig. '6 is a sectional view taken on .line 6-e6 ofl ig. 2, disclosing the controlling means for the 'fluid inlet regulating valve.

Referringmore particularly to the drawings, wherein like reference numerals designate corresponding parts throughout the several views, the reference numeral 1 indicates the cylinder of :an internal combustion englue, in which is mounted the piston 2, and intake and exhaust valves 3 and 4, and provided with the usual port 5 leading to the underside of the intake valve and to which is generally connected the inlet manifold. The top ofthe cylinder is preferably provided with the usual threaded openings- 6 and 7 above the intalic and exhaust valves 3 and 4, the opening 7 being closed by a suitable cap ;8, and threaded into the opening 6 is' the lower end of an open ended tubular casing '9, in which is mounted a valve l0formed with a cylindrical chamber 10, which is' o-pen at its upper end as at 11 and closed'at its lower end by .a portion 12 provided with a beveled lannularly extending flange 13, which limits the upward movement of the valve in thecasing and in the beveled scat v14 formed in the lower end of said casing 9. The valve 10 is normally held in its upper-most position by a coiled spring interposed between the annular flange 16 at the upper end of the valve, and the inwardly projecting flange 17 formed on the inner surface of the casing 9. Suitable bafile plates 18 are mounted in spaced relation one above the other in the lower part of the chamber 10, and are provided with suitable perforations 19 which are arranged in staggered relation to each other on the respective plates and through which the fuel is drawn and thoroughly atomized,

the'same discharging through the downwardly inclined perforations 20 arranged .annularly of the side walls of the valve 10 immediately above the beveled flange 18.

The valve 1O is slotted longitudinally as at 21, and through said slot projects tlie inner end of a spray nozzle 22, extending through the casing 9, and provided with the fuel inlet opening 23 which connects at one end through the tapered opening 24 with the channel 25 which in turn connects at its opposite. end through the tapered opening 26 with the outlet opening 27, open ing into the chamber 10. The fuel is fed through a pipe 28 connected with the inlet opening 20 and extending to any suitable source of supply. Positioned over the upper open end of the tubular casing 9 and secured thereto, as by the screws 29, is a cover plate 30, formed with a transversely extending oblong opening 31'therein, and provided with a downwardly projecting arm 32, carrying at its lower end a pivoted lever 33,' one end of which is bifurcated and straddles a needle valve 34, the lower end of which controls the opening 26 and the upper end of said valve operates through a suitable opening 35in the plate 30, and is provided With a suitable collar 36 which is normally in contact With the lever 33, and between the upper side of which and the underside of the cover plate 30 is interposed a coiled compression spring 37 which normally maintains the lower end of the controlling needle valve seated in the opening 26. The opposite end of the lever is acted on by an adjustable screw 38 threaded through a lug 39pmjecting from the interior surface of the valve 10.

From the above constructihn it will be ap- I parent that oneach suction stroke. of the piston the valve 1O will be drawn down"- wardlyin the casing 9 against the action of I the spring 15, and'such movement will cause the screw 38- to operate the lever 33 which will unseat the fuelcontrolling needle valve 34 from the openin 26 and permit fuel to be drawn into the mixing chamber -and out through the openings.20 into the combustion chamber on each suction stroke of the piston-.1

",Slidabl mounted between the parallel spaced tracks 40 secured tothe upper surface.

o f'the cover plate 30 is a valve pLate 41, provided with the transversely extending opening 42 therein which is of a size correspond ing to the opening 31 and the valve plate when operated in a hereinafter described manner is adapted to control the efi'ective area of the opening 31. .The valve plate is slotted as at 43 which provides spaced arms 44 between which project the upper end of a fuel regulating needle valve 45, which operates through the plate 30 and the flange 46 on the casing 9, and the lower end of said needle valve extends through the nozzle 22 and controls the passage 24, the needle being seated therein by, the action of a spring 47. The upper end of the needle valve is sub stantially T-shaped and carries the rotatable rollers 48, which rest on the inclined spaced spring trackways 49 secured at one end to the valve plate 41, and rest adjacent their outer ends on the adjusting earns 50, secured to the upstanding tracks 51 carried by the arms 44, by the bolts 52. The valve plate 41 on being operated to regulate the air in let opening 31, Willjl lSO cause the tracks 49 to move therewith, and the movement thereof will control the opening and closing of the fuel feed regulating needle valve 45 and the opening and closing movement of said valve 45 in accordance with the movement of the plate 41 may be varied by adjusting the cams 50 which regulate the pitch or incline of the tracks 45.

Positioned over the opening 5 is a suitable iace plate 53, formed with a square opening 54 therein and said opening is controlled by a valve plate 55 provided with a substantially square opening 55 therein, and said plate is slidably mounted between tracks 56 carried by the face plates 53.

An operating lever 56 pivoted to the support 57 secured to the cylinder and provided with the angularly extendingfoot portion 58 controls the operation of thevalve plates 41 and 55, the plate 41 being pivotally eonneeted through the link 59 with the end of the foot 58, and the plate 55 being pivotally.

connected through a link .60 with the. lever-56.

.It will be square air inlet' ports or openings 54 and 55? that upon the movement of the lever 56 which operates the valve plates 4'1 .and 55 simultaneously, the effective areaof theall-engine load conditions, a greater quantity of-air -being ,admittcd \vhen t'he engine 15 operating at high speed and under heavy -load cond,itions and a lesser amount whenth engine l'oad'is light. .As the engine load is decreased-idle lever 56- is moved down-' apparent that providing the transversely extending oblong air inlet'ports or. openings 31 and 43 and the substantially lid wardly reducing proportionately theeffectivc area of'the air inlet ports 31 and d, and as the plate 4-1 moves to reduce the air inlet opening 31, the fuel feed regulating needle valve 45 will move to reduce the elfetive area of the fuel inlet openin 24, the three being regulated simultaneous y to maintain at all times a proper fuel mixture and a through the openings atthe lower end of the valve 10 into the combustion chamber of thecylinder will be thoroughly heated and gasified thereby.

Having thus described our invention what we claini as new and desire to protect by Letters Patent i." 1*- l. A carbureter comprising a hollow casing adapted to be mounted to open directly into the combustion chamber of an engine cylinder and provided with an air inlet port and a mixture discharge port, a normally seated valve for controlling the mixture discharge port in said casing, a fuel inlet ex tending into said hollow casing below said air inlet, valve'controlled means independent of said first mentioned valve and actuated by the operation of said discharge port controlling valve for controlling the dislib valve, actuated on the charge of fuel into the casing, and means for regulating the effective area of said air inlet port.

2. In combination with the cylinder of'an internal combustion engine provided with a valve controlled air inlet port, a carbureter comprising a hollow casing mounted at one end to open into the combustion chamber of the cylinder and provided at its opposite end-with an air inlet port, a normally seated formation of a vacuum in the. engine cylinder for opening the communication between the hollow cas ing and the interior of the cylinder, a fuel inlet communicating with -the interior of said casing above said valve, valve controlled means independent of said normally seated valve and actuated on the operation of said discharge port controlling valve for opening and closing said fuel inlet, and means for varying the efi'ective area of both or" said air inlet ports.

. l 3. In combination with the cylinder of an internal combustion engine provided with a tl i valve controlled air inlet port, a carburetor comprising a hollow casing mounted to open into the combustion chamber of the cylinder and provided .with an air inlet port, a nor-l Mali seated tubular valve mounted in said casii and provided with'a mixing chamber therein, said valve adapted for closing the lower end of said casing, a fuel inlet communicating with the interior of said mixing chamber, the lower end of said tubular valve being provided with mixture discharge ports adapted to open into the combustion chamber of the cylinder on the formation; of a "vacuum therein, and means for varying the effective area of both of said air inlet ports. 4. In combination with the cylinder of an internal combustion engine provided with a valve controlled air inlet port, a carbureter comprising a hollow casing mounted to open into the combustion chamber of the cylinder and provided with an air inlet port, a normally seated tubular valve mounted in said casing and provided with a mixing chamber therein, said valve adapted for closing the lower end of said casing, a fuel inlet communicatin with the interior of said mixing chamber, t 1c lower end of said tubular valve being provided with mixture discharge ports adapted to open into the combustion chamberof the cylinder on the formation of a vacuum therein, valve controlled means actuated on the operation of said tubular valve for opening and closing said fuel inlet, and means for varyingthe efiective area of both of said air inlet ports.

5. In combination with the cylinder of an internal combustion engine provided with a valve controlled air inlet port, a carburcter comprising a hollow casing mounted to open into the combustion chamber of the cylinder and provided with an air inlet port, a tubular valve mounted'in said casing and provided with a mixing chamber therein, said valve adapted for closing the lower end of said casing and to be unseated on the formation of a vacuum in the engine cylinder, a fuel inlet communicating with the interior of said mixing chamber, the lower end of said tubular valve being provided with mixture discharge ports adapted on the unseating of the same to form a communication between the mixing chamber and the combustion chamber of the engine cylinder,

baffle plates mounted in the lower end of said mixing chamber, means for varying the efl'ect1ve area of sand air inlet ports, and a valve controlled by the means for varying the effective area of one of said air inlet ports for regulating the passage of fuel into said fuel inlet.

6. In a carburetor for internal combustion engines, comprising a tubular casin open at one end and rovided at its opposite end with an air in ct port, and adapted for mounting to communicate with the combustion chamber of an engine cylindep, a spring seated tubular valve mounted in fssid casing and provided with a mixingchamber therein, said-valve adapted for closingt-he lower end of said casing, and to be unseated on the formation of a vacuum in the engine cylinder, a fuel inlet communicating With the interior of said mixing chamber, the lower spasms cordance with the movement of openin of said valve, and means for varying the e ective' ar'eo, of said air inlet port. 15

In testimony whereof we have signed our end of said tubular valve being provided namesto this specification in the presence of with mixture discharge ports adapted on the unseating of the same to form a communication between the mixing chamber and the combustion chamber of the engine cylinder, means actuated by the operation of said tubular valve for controlling the admission of fuel into the combustion chamber in actwo subscribing witnesses.

STANLEY H. PAGE. CHARLES J. BELDEN.

Witnesses:

HARRY H. TOTTEN, D. B. RICHARDS. 

